Means for the periodic and automatic rotation of a shaft through pre-determined angles which are controlled by a perforated card, more especially for the selective insertion of different yarn shuttles on looms



April 26, 1955 c. FucHs 2,707,005 ANDAUTOMATIC ROTATION OF A SHAFTINSERTION OF D'IFFERENT YARN SHUTTLES 0N LOOMS Filed Dec. 28, 1951 4Sheets-Sheet l ATTORNEYS April 26, 1955 4 sheets-sheet 2 -INSERTIONFirled Dec. 28, 1951 INVENT'oR CARL FUCHS B11/M51 L/ LV ATTORNEYS April26, 1955 4 Sheets-Sheet*l 3 ATTORNEYS April 26, 1955 Q FUCHS 2,707,005

MEANS FOR THE PERIODIC AND AUTOMATIC ROTTION OF' A SHAFT T UGH PPE*ERMINED ANGLES WHICH ARE CONTROLLED BY ERFORATE D, MO ESPECIALLY FOR THESELECTIVE ARN SHUTTLE INSERTION DIFFERENT Y S ON LOOMS Filed Deo. 28,1951 4 Sheets-Sheet 4 ATTORNEYS United States Patent O ANGLES WHICH ARECONTROLLED BY A PERFORATED CARD, MRE ESPECIALLY FOR THE SELECTIVEINSERTION F DIFFER- ENT YARN SHUTTLES 0N LOOMS Carl Fuchs,Heidenheim-Mergelstetten, Germany, assignor to WolldeckenfabrikZoeppritz Aktiengesellschaft, Heidenheim-Mergelstetten, GermanyApplication December 28, 1951, Serial No. 263,903 Claims priority,application Germany December 28, 1950 Claims. (Cl. 139-172) card, ferentyarn shuttles on looms.

The problem frequently arises, in various techniques, of rotating shaftsperiodically and automatically through partially in the same directionand partially in the opposite direction. A typical case of this in loomsequipped with d effected hydraulically.

Figure 2 is a cross section on the line II-II l, that is to say, asection through the loom.

Figure 3 is a more or less diagrammatical sectional view showing thearrangement by means of which a drum magazine 2 containing .thedifferent of Figure rated card arrangement 16 to 19 1s shown induplicate, although in actual fact only one is provided. The drum 4 isalso shown in duplicate, one at the top and one below (in conjunctionwith the linked chain 36), although actually only one is provided.

Figure 4 is a cross-section through the drum magazine f a compressionspring 44 and by means of cables 47, indicates the actual position ofthe drum magazine 2 to 4 to the other side of the loom.

Figure 5 indicates the connection of the transverse yoke 2,707,005Patented Apr. 26, 1955 10 with the control slide valve 9 in thedirection of movement (vertically).

In all the Figures 1 to 5, the letters indicate elements of the loom thepurpose of explanation'but whic parts represented by which are shown forbear no direct coninvention.

In the drawings:

a is the container for operating liquid (left side of loom).

l b the container for operating liquid (right side of oom c is the pipefor the llow of liquid under pressure from one side of the loom to theother.

is a reed vibrator.

e is the reed beam.

f are the reed blades.

g are the weft path blades rigidly connected with the breast beam h.

h is the breast beam.

z' is the jet arrangement.

k is the jet deflector.

l are the guide-ways for the jet m is the cylinder for the air bra n isthe picker.

a is the bottom flap for the shuttle changing cell v.

p is the control device for the shuttle changing operation.

q is the ejector device.

r is the adjustment device.

s is the housing for the ejector device q and the adjuster device r.

t is the reserve shuttle magazine.

u is the displacement servo-motor.

v is the shuttle changing cell.

w is the crankshaft.

x is the reed linkage.

y is the shuttle path.

z is the collecting channel for ejected empty shuttles.

1 are the shuttle cells for the different operating shuttles 48.

2 is the drum magazine rigidly connected with the drum shaft 4 and therotatable piston 5.

3 is a fixed stop segment of the rotational servomotor which consists ofthe parts 5..

shaft by which the mounted in suspended fashion.

5 is the rotary piston for the servo-motor 3 to 5 rigidly connected withthe drum shaft 4.

6 is the control conduit to the servo-motor 3 to 5 for rotation in acounterclock-wise direction.

7 is the control conduit to the servo-motor 3 to 5 for rotation in aclock-wise direction.

8 is the control casing in which the control slide valves 9 are guided.

9 are the control slide Valves, one for each cell 1.

10 are transverse yokes (2 of them) which transmit the respectively toand are connected at their the latter in force-related manner in avertical direction (Figure 5): at their bottom ends is located thetransverse yoke plate 11 which is engaged by the levers 31 and 32.

11 is the transverse yoke plate rigidly connected with the yoke 10.

12 is a compression spring which forces the yoke plate 11 downwardlyrmly against the levers 31 and 32.

13 is the intake pipe for the liquid, preferably oil, to the pressurepump 14.

4 is the pressure pump (if desired, this can also be operated withliquid other than oil, for example, emulsion).

1S are pressure conduits.

16 is the shaft for the perforated card drum on which the said drum isrotatably mounted.

17 is the forated cards 19 travel.

18 1s an eccentric disc rigidly connected with the drum deector k. ke.

drum magazine 2 is perforated card drum over which the perf-` shaft 16:this disc serves to lift the feeler pins 22 during the continuedrotation of the perforated card drum 17.

19 is a perforated card, the arrangement of the perforations thereindetermining the sequence of the colour shuttles.

20 is a lifting cross member which serves for transmitting the movementof the eccentric disc 18 to the feeler pins 22.

21 is a frame for the perforated card device.

22 are feeler pins which can engage in the holes of the perforated cards19 and thus release the pivotal feeler lever 24.

23 are compression springs which exert a force on the feeler pins 22 inthe direction of the perforated card 19.

20are the feeler levers pivotally mounted on a pivot pin 25 is theregulator housing.

26 is the regulating slide valve carrying at its lower end a head whichis engaged by the feeler lever 24. This valve is guided in the housing25 and carries at its upper end a. pair of pistons which control thesupply and discharge to and from the lifting plunger 29 through thecontrol bore 28.

27 is a compression spring downwardly on to the lever 24.

28 is the control bore in the housing 25.

29 is the lifting plunger consisting of a piston which is guided in thehousing 25 and a stem on which bear the return levers 31 and 32.

30 is a compression spring.

31 is a one-armed return lever.

32 is a two-armed return lever.

33 is a return slide which is connected with the drum shaft 4 through achain 36 by means of the chain wheel 39. By means of the cams 34 and 35adjustably arranged on the slide it serves for the return of the deectedonearmed and two-armed return levers 31 and 32, respectively, into theirbottom initial position when the drum shaft 4 has travelled through thepredetermined angle of rotation.

34 is a cam adjustably mounted on the return slide 33: it brings thepertaining deflected two-armed lever 32 into its initial position uponupward movement of the slide 33.

35 is a cam similar to 34: it brings the pertaining deected one-armedlever into its initial position upon downward movement of the slide 33.

36 is the connecting chain.

37 are end securing means slide 33.

38 is a fixed pivot pin 39 is the upper chain drum shaft 4.

4g8is the bottom chain wheel mounted on the fixed pivot pm 41 and 42 arecams rigidly shaft 4 (Figure 4). They signal the position of the drummagazine to the control device p (Figure l) for the shuttle-changingoperation on the opposite side of the loom through cables 47 andcompensating tension springs 46, which are not indicated in Figure 1.The actuating arrangement 43 to 45 for the cables 47 is only indicatedfor the cam 42 which has just responded.

43 are feelers for the cams 41 and 42, only the feeler for cam 42 beingshown.

44 is a compression spring for the feeler 43.

45 is the securing means for the cable 47 to the feeler 43.

46 is the compensating tension spring for the cable 47.

47 is the cable.

48 are the operating shuttles which contain yarn of different colours orqualities and are disposed in the shuttle cells 1 of the drum magazine2.

49 is the fixed housing for 3 to 5.

50 to 52 are pivot pins.

53 and 54 are conduits for operating liquid.

The arrangement for the rotation of a shaft through anglespre-determined by perforated cards operates as follows:

As long as one of the shuttles 48 is located in the uppermost shuttlecell 1 according to Figure 4, all the parts illustrated, apart from theshaft 16, remain at rest. If another shuttle 48 is now required, perhapsbecause a weft thread of another colour or another quality is requiredfor the weaving operation, the arrangement for the which forces thevalve 26 for the chain 36 to the for the bottom chain wheel 40. wheelrigidly connected with the the rotational servo-motor connected with thedrum rotation of the drum magazine 2 and at the same time the mechanismfor the corresponding automatic changing of the shuttle 48 becomesoperative hydraulically.

The crank shaft indicated by w in Figure 2 rotates continuously at aconstant speed. It transmits its movement in a manner not shown to theshaft 16 of the perforated card arrangement 17 to 19, which rotates athalf speed (Figs. 1, 3 and 4). With each revolution of the shaft 16, theeccentric discs 18 lift all the feeler pins 22 of which only one isillustrated by the lifting cross-member 20 (for example, in the mannerillustrated), whereby the perforated card drum 17 is freed for rotation.The perforated card drum 17 is thereupon rotated through such an angle,for example 60, that the next following card 19 comes in front of thefeeler pins 22. The manner in which cables 47 are secured at either endsand the mode of operation of the entire shuttle replacing mechanism aredescribed in detail in my co-pending patent application Serial Number263,904, flled December 28, 1951.

' In the position of the feeler pins 22 as shown in Figure 3, thearrangement is at rest. On the contrary, when a feeler pin 22 is in theposition as shown in Figure 4 (feeler pin 22 pushed through theperforated card 19), the pertaining feeler lever 24 swings outwardlyabout the pivot pin 50 and the regulating slide valve 26 is moveddownwardly because of the compression spring 27.

Due to this movement, the liquid under pressure supplied by the pump 14and through the conduit 15 is shut olf between the pistons of theregulating Valve 26 and simultaneously the space located above thelifting plunger 29 is relieved in an upward direction by the controlbore 28. The compression spring 30 now forces the parts 29, 32 (31), 10and 9 upwardly against the action of the spring 12. By this means, thecontrol conduit 6 is supplied with liquid under pressure, while the saidliquid can escape from the other side of the rotary servo-motor 3 to Sthrough the conduit 54. The servo-motor 3 to 5 is actuated thus drivingshaft 4 and thereby the drum magazine 2 is set in rotation. Thisrotation continues until the deflected two-armed return lever 32 travelsback to its initial position again, due to the engagement thereof by cam34 the upward movement thereof with the return slide 33, as shown inFigure 3, and closes valve 9 pertaining thereto. Consequently, thedesired shuttle 48 is brought into the operative position in theuppermost shuttle cell 1 of the drum magazine 2. It is now no longerpossible for any flow to occur in the control conduits 6 the conduits 53and 54, whereby the drum shaft is held in the required position. The cam42 (Figure 4) has signalled the present position of the drum through thefeeler 43, he compensating spring 46 and the cable 47 to the other sideof the loom and thus, as required, an empty shuttle is replaced by afull shuttle of the same type of yarn introduced into the weavingoperation on the right side of the loom.

So long as the shuttle 48 with a spool of the same colour and yarnquality is required, the apparatus remains in the rest positionaccording to Figure 3, in the perforated card 19 is disposed beneath anyone of the feeler pins 22. lf a shuttle 48 with a spool of anothercolour or another yarn quality is required, this operation is initiatedas described by a hole in the corresponding perforated card 19 throughthe perforations of which a pin will pass as shown in Figure 4. Thearrangement shown in Figures 3 to 5 can be used for as many differentcolours and different qualities of the weft yarn as the drum magazinehas shuttle cells 1. There are always the same number of cams 34 and 35as there are shuttle cells 1. These cams 34 and 35 are arrangedaccurately adjustable on the return slide 33, so that the position ofthe shuttle cells 1 can be fixed for the weft position at the time.

Therefore, instead of replacing the shuttle 48 mechanically by anotherwhen there is a change of colour, which is the method usually adopted atthe present time, the changeover is effected by an automatic hydraulicarrangement in accordance with the method described and the arrangementillustrated. As a consequence. there is a considerable saving in timeand labour and thus a reduction in the operating costs. ln addition, theapparatus described ensures a smooth, positive and silent operation.Since it is possible to use oil as the working liquid` any appreciablewear is also excluded and the life of the equipment is almost unlimited.The entire apparatus is so small that it can be arranged convenientlyand unnoticeably inside the loom.

I claim: uid Operable means are provided, also etective when 1. Incombination; a rotatable shaft to be moved into a energizing forovercoming said yielding means, and valve plurality of indexe positions,a reversible hydraulic means hydraulically connected with said iluidoperable motor connected to said shaft, a plurality of control meansnormally biased toward a position to exhaust said valves hydraulicallyconnected to said motor and in par- 5 fluid operable means and movableinto position for allel with each other, each said valve having a firstenergizing said fluid operable means. position wherein uid flowtherethrough is blocked and 7. In an arrangement according to claim 6 inwhich an a second position wherein fluid is passed therethroughindividual perforated card controlled actuating mechafor actuating saidmotor in one direction, means nornism is provided for each said valvemeans. mally urging said valves toward their said first position, l 8.In an arrangement according to claim 7 in which means for selectivelyand singly actuating said valves into the said shaft supports arotatable multi-cell shuttle their said second positions, a cam operatedmeans for holder for a loom with the indexed positions of said eachvalve for moving it from its second to its first posishaft correspondingto the positions of registration of tion, and cams movable with saidshaft for engaging said said cells with the picking axis of the loomsaid loom cam operated means whereby the actuation of any valve l havinga multiple compartment reseive shuttle magazine Wil be accompanied bymovement of said shaft to the on the side of the loom opposite therotatable holder, and perdetermined indexed position correspondingthereto means operated by rotation of said shaft for detern anarrangement according to claim l in which mining the selection ofshuttles from said magazine in the rotatable shaft carries a drum havinga plurality of accordance with the position of said holder whereby cellsfor receiving shuttles, and the said indexed posiA an exhausted shuttlewill always be replaced by a ietions of said shaft being those positionswhere the said serve shuttle having a like weft thread.. cells registerwith the picking axis of the loom, of which 9. In combination; a shaftadapted for being rotated the drum forms a part, to a plurality ofpredetermined indexed positions, a

3. An arrangement according to claim 2 in which said rotary hydraulicservo-motor having a movable part shaft carries a plurality of rotatablecam members, and rigidly attached to said shaft, a plurality of controlvalves elements associated with said members positioned to behydraulically connected to said motor and in parallel actuated therebyso that a diterent one thereof is actuated with each other, each saidvalve having a first position for each different indexed position ofsaid shaft whereby wherein How therethrough is blocked and a secondposithe said elements can be employed for creating a signal tion whereinow is passed therethrough for actuating to control the movement of areserve shuttle magazine. said servo-inotor, rst resilient meansnormally urging 4. In combination; a rotatable shaft to be moved to asaid valve toward said first position, second resilient plurality ofindexed positions, a rotary hydraulic motor means stronger than saidfirst resilient means for selecassociated with the shaft, a plurality ofcontrol valves tively actuating said valves singly into their saidsecond hydraulically connected with said motor and in parallel position,and an element for each said valve operable with each other, each valvebeing noimally urged to- 33 to make the said second resilient means ofthe perward a tiist position wherein flow therethrough is blockedtaining valve ineffective to permit the return of the said and having asecond position wherein uid is passed pertaining valve to its said iirstposition by said first therethrough for actuating said motor, anactuating memresilient means, Said elements being driven by said ber foreach valve movable fiom a normal ineffective shaft so as to becomeeffective upon the shaft ieaching position into position to move theassociated valve to its the indexed position corresponding to the:actuated one said second position a cam for engaging each member of saidvalves following the actuation of the said valve and returning it to itsineffective position, a slide supto its second position to energize saidservo-motor. porting said cams, and means for driving said slide by 10.In an arrangement according to claim 9 in which said shaft whereby theactuation of each valve will be there is mounted on the shaft arotatable shuttle holder accompanied by movement of the said shaft toadifferent for a loom having a pluiality of cells for receiving one ofits indexed positions. shuttles, and the said indexed positions of saidshatt In combination; a rotatable shaft to be moved to a correspondingto the positions of alignment of said cells plurality of indexedpositions, a rotary hydraulic motor with the picking axis of the loom.associated with said shaft, a plurality of control valves hydraulicallyconnected to said motor and in parallel with References Cited in thefile of this patent each other, each said valve being normallllyugedktowar a first position wherein flow therethroug is loc e an vhaving a second position wherein fluid is passed thei'e- UNITED STATESPATENTS through for actuating said motor, a lever associated with112A.I. ECClcS .lluly 18, 1834 each valve having a first ineffectiveposition and being 223,534 Pont Ian. 13, 1880 movable into a secondposition for actuating the associ- 1,275,701 Kingsbacher et al. Aug. 13,1918 ated valve to its second position, resilient means urging 1,806,669Campbell May 26, 1931 each lever toward its said second position, a camfor 2,398,997 Berry Apr. 23, 1946 moving each lever to its said rstposition against the 2,425,676 H indle Aug. 12, 1947 bias of saidyielding means, a slide supporting said cam, 2,431,642 Hindle Nov. 25,1947 and means drivingly connecting said slide with said shaft 2,454,603Heaton Nov. 23, 1948 for movement in synchronism therewith. 2,615,475Eves Oct. 28, 1952

